五桠果叶木姜子 wu ya guo ye mu jiang zi

Evergreen trees, 20-26 m tall, 28-30 cm d.b.h. Branchlets stout, glabrous, conspicuously angulate with elliptic lenticels; leaf scars rotund, large, 4-5 mm in diam. Leaves alternate; petiole 2.5-5 cm, stout, glabrous; leaf blade oblong or obovate-oblong, 21-60 × 11-14.5 cm, glabrous on both surfaces and glaucous abaxially, pinninerved, lateral veins 15-22 pairs, midrib stout, transverse veinlets conspicuous on both surfaces, base cuneate or oblique, apex shortly acuminate or rotund. Umbels 6-8 in racemes on short branchlets, 5-flowered; short branchlets ca. 4 mm in diam., densely ferruginous pubescent. Male flowers: pedicel 3-4 mm, densely ferruginous pubescent; perianth segments 8, long ovate; fertile stamens 16 or 17; filaments below middle yellow pubescent, of 3rd whorls each with 2 shortly stipitate rounded-cordate glands at base; rudimentary pistil ovoid, glabrous. Fruit compressed globose, ca. 1.5 × 2-2.3 cm, purple-red at maturity, seated on cup-shaped perianth tube; fruiting pedicel ca. 4 mm, stout, pilose. Fl. Apr-May, fr. Jul.

● Moist areas of riverbanks in rain forests; ca. 500 m. S Yunnan.